for good

[light]

hi,
does 'for good' means completely?
'Their relationship finished for good.'
can we use it in a negative sentence? 'Their relationship didn't finish for good.'
merry christmas

[Tdol]

For good = permanently, forever
Therefore, your sentence could work if they didn't finish it permanently, but it's likely that you'd say it a different way.

[light]

thank you for the reply.